TY  - CONF
A1  - Forcrand, Philippe de
A1  - Kim, Seyong
A1  - Unger, Wolfgang
T1  - A surprise with many-flavor staggered fermions in the strong coupling limit
T2  - Proceedings of Science
N2  - It is widely believed that chiral symmetry is spontaneously broken at zero temperature in the strong coupling limit of staggered fermions, for any number of colors and flavors. Using Monte Carlo simulations, we show that this conventional wisdom, based on a mean-field analysis, is wrong. For sufficiently many fundamental flavors, chiral symmetry is restored via a bulk, first-order transition. This chirally symmetric phase appears to be analytically connected with the expected conformal window of manyflavor continuum QCD. We perform simulations in the chirally symmetric phase at zero quark mass for various system sizes L, and measure the torelon mass and the Dirac spectrum. We find that all observables scale with L, which is hence the only infrared length scale. Thus, the strong-coupling chirally restored phase appears as a convenient laboratory to study IR-conformality. Finally, we present a conjecture for the phase diagram of lattice QCD as a function of the bare coupling and the number of quark flavors.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27444
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-274442
SN  - 1824-8039
N1  - The 30 International Symposium on Lattice Field Theory - Lattice 2012, June 24-29, 2012 Cairns, Australia
VL  - 2012
IS  - (Lattice 2012)053
SP  - 1
EP  - 7
PB  - Scuola Internazionale Superiore di Studi Avanzati
CY  - Trieste
ER  -